Re-inforced Concrete for Farm and Estate Purposes. 135 



the mass, and the type of re-inforcement used, namely bars, 

 does not interfere in any way with its accomplishment. The 

 wet system of mixing enables the concrete to be placed in 

 position without ramming to any extent, but the exponents 

 of the drier method claim that air spaces are liable to be left, 

 and also that the surplus water must evaporate from the mass 

 leaving voids, and possibly causing contraction, from whicl 

 surface cracks may result. The excess of water may wash 

 the cement coating off the stone chippings, and also the 

 moulds must be left in position until the concrete has set ; 

 but in the semi-dry method the moulds can be removed before 



Fig. 10.— Burderop Park. Cow-stall divisions, &c. 



Betting, and the surface smoothed over so that no rendering, 

 with its subsequent liability to scale, is required, and a good 

 weatherproof surface is cheaply obtained. 



Mr. Hopkins has not so far applied his method of con- 

 struction to the erection of labourers' dwelling houses. 



It is, perhaps, unnecessary to multiply examples of ferro- 

 concrete construction for farm buildings, but to mention one 

 more, differing slightly from either of the foregoing, Mr. R. 

 Newton Jackson has erected a set of farm buildings at the 

 Malthouse Farm, Skenfrith, South Wales, consisting of fouj- 



